一项针对城市地区高地供水处理的高速常规处理、颗粒介质直接过滤和臭氧硅藻土（DE）过滤的对比研究，重点关注水质、运行和维护效率，以及美学和成本考虑。对于这一特殊应用，臭氧脱附处理被证明是首选工艺。包括3个参考文献、表格和图表。

A comparative study of high-rate conventional treatment, direct filtration with granular media, and ozone-diatomaceous earth (DE) filtration for treatment of an upland water supply in an urban area focused on water quality, efficiency of operation and maintenance, and aesthetic and cost considerations. For this particular application, the ozone-DE treatment proved to be the process of choice. Includes 3 references, tables, figures.